Feet and Inches Length Measurement Calculator

Adding and subtracting inches and inch fractions is easy, simply enter your feet, inches, or metric calculations below, for example enter 6' 8 5/16" - 3ft + 8inch * 2 - 12cm. The calculator will convert fractions, calculate inches to cm, and will convert imperial to metric measurements automatically.

Calculating inches, inch fractions, feet and centimeters
Inches, Feet, and Centimeters Results
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Imperial Units
0 Inches (fraction)
0 Inches
0 Feet
Metric Units
0 Millimeters
0 Centimeters
0 Meters

Feet and inches measurement calculator information

Calculate tape measure feet, inches, inch fractions, and centimeters or convert
  • Use the calculator to add, subtract, multiply, and divide imperial and metric measurements with as many values as you would like.
  • Type your calculation just like you would write it on a piece of paper.
  • Use inch and feet symbols, abbreviations, or singular or plural names.
  • Mix and match metric measurements and imperial measurements. Add or subtract inches, inch fractions, feet, yards, millimeters, centimeters, and meters in any combination.
  • Calculate length and get measurements in feet and inches, inches with fraction, inches as a decimal, millimeters, centimeters, and meters for easy conversion.
  • Round decimal feet and inches to the nearest inch fraction measurement and get the decimal measurement for the inch fraction.
  • Convert feet and inches to meters and centimeters and vice-versa. Convert many other measurements easily with our length unit conversion tool.

Measurement and calculator resources